The centerpiece of this slide set is the first slide; a
very handy summary of the 3 tenses and 4 aspects in
English.

The next slide can be used to highlight the idea that
it's good to learn the tense/aspect forms, but that
you will eventually have to learn to grapple with the
tense/aspect semantics; that is, when, where, and
how to actually use them. What you can tell the
students is that it's one thing to become a tense/aspect
"strong man," knowing how to correctly form them, but that
you eventually need to understand how to use them; how to
"dance," as it where....

From here, it's your call as to where you want to start
talking about semantics.

What kinds of "rules" are there in creating titles for
essays or stories? Answer: None that are "hard and fast"
in the usual sense. But let's look at some real-world
titles and see if we can get the idea....